This is nifty, but to one as unschooled as I in science, potentially fraught with peril. I don’t care that the demonstrator seems to have made it out with his digits intact – I’m waiting for Frannyy to try it first. If he’s able to report back in a timely manner (i.e. without his bloodied finger stumps ruining the keyboard) I’ll feel far more confident. (Or confidenter, as us unbooklearned types say…)